134 



PESTS OF GARDEN AND FIELD CROPS 



Certain weeds, especially burdock and ragweed, are the native 

 food plants. Control consists in cutting and promptly destroying 

 such weeds in or near the crops or plants attacked. The only direct 

 measures feasible are removal of infested stalks as soon as the presence 

 of the borers is discovered. 



Fig, 117. — Work of the Squash Borer. Original. 



The Squash Borer (Melittia satyriniformis Hbn.) 

 Whitish, fleshy grubs, about an inch long when full grown, bore 

 in the stems of squashes and sometimes pumpkins or melons, often 



Fig. 118. — Larva of the Squash Borer 

 in stem of plant. Slightly enlarged. 

 Original. 



Fig. 119. — Cocoon and 

 empty pupal shell of the 

 Squash Borer. Original. 



killing the part of the plant beyond them. Yellowish excrement will 

 be found beneath the stem at the points where they are at work. 



